netdev - Re: [PATCH] iptables: use skb->len for accounting

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 23 Jul 2010 14:14:13 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Changli Gao <xiaosuo@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] iptables: use skb->len for accounting

Le vendredi 23 juillet 2010 à 13:49 +0200, Patrick McHardy a écrit :


> Actually skb->len is also exact at the IPv4 level. I'm inclined
> to apply this patch for consistency with ip6_tables, where using
> skb->len fixes jumbo frame accounting.
> 

Thats right.

I was confused by recent problem raised with UDP checksums.

But pskb_trim_rcsum() is indeed called from ip_rcv() so
skb->len == ntohs(iph->tot_len)

Thanks


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html